Answer: b
Explanation: The three left hand fingers denote electric field, magnetic field and wave propagation in free space, analogous to force, magnetic field and current respectively in any conductor.

8. The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False.
a) True
b) FalseView Answer

Answer: a
Explanation: Dot product is an algebraic operation that takes two equal length sequences and returns a scalar. Cross product is a binary operation that calculates area of two vectors, thus vector quantity.